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Finding the Fourth Proportional to 52,720.72, 72,713.52 and 33,859.60

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Solution

The fourth proportional to 52,720.72, 72,713.52 and 33,859.60 is: 46,699.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,720.72 : 72,713.52 = 33,859.60 : x
  2. Step 2: Convert to fraction form
    52,720.72/72,713.52 = 33,859.60/x
  3. Step 3: Cross multiply
    52,720.72x = 72,713.52 × 33,859.60
  4. Step 4: Simplify right side
    52,720.72x = 2,462,050,701.79
  5. Step 5: Solve for x
    x = 2,462,050,701.79/52,720.72
  6. Step 6: Final answer
    x = 46,699.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.